Born of a noble family near Viterbo (Italy,) Hyacintha entered a local convent of sisters who followed the Third Order Rule. However, she supplied herself with enough food, clothing and other goods to live a very comfortable life amid these sisters who had pledged to mortification.

At one point in her time there, a serious illness required that Hyacintha’s confessor bring Holy Communion to her room. Upon entering, he was scandalized to see how soft of a life she had provided for herself, so he advised her to live more humbly. After hearing this, Hyacintha then disposed of her fine clothes and special foods. She eventually became very penitential in food and clothing, and was ready to do the most humble work in the convent. She developed a special devotion to the sufferings of Christ and by her penances became an inspiration to the sisters in her convent. She was canonized in 1807.